Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
luan chung » luan chinh
doi chieu » doc hieu, doi chi, ho chieu
hanh dong » anh dong, ha dong
luan hung » lan hung, luan ung, tuan hung
tang tai » hang tai, dung tai, dong tai
sang tao » hang tai

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh dong ((luan hung) OR (luan chung)) cong ((tang tai) OR (sang tao)) cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh dong ((luan hung) or (luan chung)) cong ((tang tai) or (sang tao)) cau*.